Preparation of methyl isopropenyl ketone

Details Preparation of methyl isopropenyl ketone Preparation of methyl isopropenyl ketone

C - Chemistry, Metallurgy

07

C

C07C 45/45 (2006.01) C07C 45/75 (2006.01) C07C 49/203 (2006.01)

Patent

CA 2047403

ABSTRACT OF THE DISCLOSURE Methyl isopropenyl ketone is produced from methyl ethyl ketone and paraformaldehyde under mild reaction conditions utilizing a catalyst comprising a halogen acid salt of a secondary amine and (a) a non-soluble solid oxide of an element selected from Groups IB, IIIA, IVA, IVB, VA, VB, VIB and VIII of the periodic table, or (b) a carboxylic acid. Temperatures of 120-150 and pressures of 700-1400 kpa are preferred; co-products may include ethyl vinyl ketone.

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